MP Materials · 2 days ago
Senior Engineer, Magnet Technology
MP Materials is rebuilding American industrial capability for a new era of autonomy, robotics, and electrification. They are seeking a hands-on Senior Engineer to lead the development and optimization of precision machining processes for high-performance, rare earth permanent magnets.
IndustrialMiningSustainability
Responsibilities
Lead the development and refinement of machining processes for cutting, grinding, shaping, and finishing of rare earth permanent magnets with tight dimensional tolerances and surface integrity
Apply advanced GD&T principles (ASME Y14.5) to interpret engineering drawings and ensure precise part geometry, flatness, concentricity, and perpendicularity
Collaborate with design and quality engineering to ensure DFM (Design for Manufacturability) of new magnet components
Conduct statistical analysis of machining data, including Cpk/Ppk, gauge R&R, and SPC charts, to monitor and improve process capability
Design and fabricate custom fixtures, jigs, and tooling to safely and accurately machine brittle, magnetized or demagnetized materials
Lead root cause analysis of dimensional defects and machining errors; develop corrective actions and continuous improvement plans
Implement process improvements to increase throughput, reduce scrap, and enhance dimensional control
Perform hands-on prototyping and process trials, working directly with in-house equipment and technicians
Conduct first-article inspections and support dimensional validation using vision systems, micrometers, and other metrology equipment
Mentor junior engineers and technicians in GD&T interpretation, statistical analysis, and machining best practices
Work closely with EHS to ensure that all work is done to ensure world-class health and safety, and full compliance with relevant environmental regulations
Other duties as assigned
Qualification
Required
Bachelor's degree in Mechanical Engineering, Manufacturing Engineering, or a related field
5+ years of hands-on experience in precision machining and dimensional control, preferably involving brittle materials
Advanced proficiency in GD&T (ASME Y14.5 standard), blueprint reading, and tolerance stack-up analysis
Proven experience with statistical analysis tools (e.g. R, Minitab) and process capability metrics (Cpk, Ppk)
Experience designing and optimizing fixtures and tooling for complex geometries
Fluent with CAD/CAM tools (e.g., SolidWorks)
Strong understanding of machining challenges posed by brittle, hard, or magnetized materials
Strong analytical and problem-solving skills; ability to work independently and as part of a cross-functional team
Excellent written and verbal communication skills
Preferred
Experience machining ceramics, intermetallics, composites, or rare earth magnets to micron-level tolerances
Knowledge of advanced inspection techniques and digital metrology
Familiarity with materials science and metallurgy concepts related to manufacturing of rare-earth magnets (e.g. sintering, magnetization, etc.)
Experience leading technical development projects, with the ability to prioritize and manage multiple concurrent projects
Experience with programming, and the ability to apply those skills to automate routine analysis, data management, and process control operations
Lifelong learner able and enthusiastic to apply existing skills and experiences to new problems
Company
MP Materials
MP Materials provides a sustainable, low-cost supply chain of coveted materials that help power the modern economy.
H1B Sponsorship
MP Materials has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (9)
2024 (5)
2023 (2)
2022 (3)
2020 (2)
Funding
Current Stage
Public CompanyTotal Funding
$2.38BKey Investors
JP Morgan ChaseU.S. Department of DefenseDepartment of Defense’s Office of Strategic Capital (OSC)
2025-08-25Post Ipo Debt· $275M
2025-07-16Post Ipo Equity· $650M
2025-07-10Post Ipo Equity· $400M
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